نتایج جستجو برای: meteorological data sunshinehours

تعداد نتایج: 2421034  

Journal: :رادار 0
بهنام زارع ایاز قربانی

in this paper, some meteorological data, such as temperature, pressure and dew point temperature are used for extracting the atmospheric refractivity in different locations of iran. these data have been measured at different heights in twelve radiosonde sites of country by using meteorological balloons. the set of refractivity points obtained from data of each site are plotted as a function of ...

Journal: :آب و خاک 0
نجمه خلیلی کامران داوری امین علیزاده محمد کافی حسین انصاری

modeling of crop growth plays an important role in evaluation of drought impacts on rainfed yield, choosing an optimum sowing date, and managerial decision-makings. aquacrop model is a new crop model that developed by food and agriculture organization (fao), that is a model for simulation of crop yield based on “yield response to water“ with meteorological, crop, soli and management practices d...

Iran has an average of 5.5 KWh per square meter solar radiation and 300 sunny days per year on 90% of the land. Regarding this amount of solar radiation and the necessity for solar potential zoning for better efficiencies, drawing solar potential maps is essential. In this study, the monthly data of 39 synoptic of Iran meteorological stations over years (1991-2000) has been used as the input da...

2017
Daria Bilińska Carsten Ambelas Skjøth Małgorzata Werner Maciej Kryza Małgorzata Malkiewicz Justyna Krynicka Anetta Drzeniecka-Osiadacz

We have investigated the relationship between the inflow of air masses and the ragweed pollen concentration in SW Poland (Wrocław) for a 10-year period of 2005-2014. The HYSPLIT trajectory model was used to verify whether episodes of high concentrations can be related to regions outside of the main known ragweed centres in Europe, like Pannonian Plain, northern Italy and Ukraine. Furthermore, w...

2016
Radia Spiga Mireille Batton-Hubert Marianne Sarazin

INTRODUCTION In France, rates of hospital admissions increase at the peaks of influenza epidemics. Predicting influenza-associated hospitalizations could help to anticipate increased hospital activity. The purpose of this study is to identify predictors of influenza epidemics through the analysis of meteorological data, and medical data provided by general practitioners. METHODS Historical da...

2014
Richard Lutz

Ten years of earth observation by the MIPAS instrument aboard the European environmental satellite Envisat [1] led to a considerable amount of measurement and processed data, which has to be managed and visualized by powerful and flexible software tools. This paper gives an overview about new concepts, tools and methods for the 3D visualisation of continuous, multidimensional, meteorological Sa...

2014
Juntao Yang Lingmei Jiang Jiancheng Shi Shengli Wu Ruijing Sun Hu Yang

a State Key Laboratory of Remote Sensing Science, Research Center for Remote Sensing and GIS, and School of Geography, Beijing Normal University, Beijing 100875, China b State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China c National Satellite Meteorological Center, Beijing 100081, China d Earth Science...

2004
Perfecto Mariño Espiñeira Fernando Machado Santiago Otero Fernando Pérez-Fontán Cristina Enjamio

Wireless access networks based in millimetre wavelength technologies are mainly impaired by rain. To evaluate the rain effects over a communication system, it is essential to know the temporal and spatial evolution of rainfall rate. For this reason, it is necessary to develop an experimental network which provides the adequate data to study, prevent and compensate the rain fade. In this paper, ...

2012
R. G. Harrison K. A. Nicoll

A programmable data acquisition system to allow novel use of meteorological radiosondes for atmospheric science measurements is described. In its basic form it supports four analogue inputs at 16 bit resolution, and up to two further inputs at lower resolution configurable instead for digital instruments. It also provides multiple instrument power supplies (+8V, +16V, +5V and -8V) from the 9V r...

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